Description: Industrial spray dryer is designed and constructed to ensure single step transformation of pumpable liquid feed into a particulate dried product. In controlled conditions, the liquid is atomised into fine droplets; a massive volume of surface per unit mass is generated resulting in a significantly reduced path for heat and mass transfer. With the effects of evaporation and drying under monitored conditions, particle formation takes place. The size of the particled product depends upon the type and design of the atomiser. Spray drying is inextricably linked to atomisation. Effective atomisation is engineered by the following methods: rotary atomisation (using centrifugal energy); pressure nozzle atomisation (using pressure energy) and two fluid nozzle atomisation (using high velocity air). Advantages include unistep operation, continuous processing, low maintenance cost, suitability for heat sensitive materials, high purity, clear operation, controllable product quality and controllable particle size.
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